I am sorry. I did not hear.
Can I open the window?
I have done this.
Can I go to the toilet?
May I join the class/group?
Sorry, for being late.
Can you explain it once more, please?
Can you speak louder, please?
Can you explain that again?
Can I come in?
Can I answer the question?
May I go out, please?
What page are we on?
May I open/ close the window?
Which book?
Where is the exam?
I am ready. May I start it?
Can I pull up the blinds?
Can I switch off7 the lights?
Do we have to write this down?
Can we pack our things now?